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          <h1 class="post-title" itemprop="name headline">React with TypeScript 系列(一) --概述</h1>
        

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<p><a href="https://lhweb.gitee.io/blog/2018/09/22/React-with-TypeScript-%E7%B3%BB%E5%88%97-%E4%B8%80-%E6%A6%82%E8%BF%B0/">React with TypeScript 系列(一) –概述</a><br><a href="https://lhweb.gitee.io/blog/2018/09/23/React-with-TypeScript-%E7%B3%BB%E5%88%97-%E4%BA%8C-%E2%80%93%E5%9F%BA%E7%A1%80%E7%AF%87/">React with TypeScript 系列(二) –基础篇</a><br><a href="https://lhweb.gitee.io/blog/2018/09/23/React-with-TypeScript-%E7%B3%BB%E5%88%97-%E4%B8%89-%E5%AE%9E%E6%88%98%E7%AF%87/">React with TypeScript 系列(三) –实战篇</a><br><a href="https://lhweb.gitee.io/blog/2018/09/23/React-with-TypeScript-%E7%B3%BB%E5%88%97-%E5%9B%9B-%E2%80%93%E6%95%B0%E6%8D%AE%E7%AF%87/">React with TypeScript 系列(四) –数据篇</a><br><a href="https://lhweb.gitee.io/blog/2018/09/23/React-with-TypeScript-%E7%B3%BB%E5%88%97-%E4%BA%94-Flux/">React with TypeScript 系列(五) –Flux</a></p>
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<p>React来自Facebook,这和AngularJS来自Google那样。AngularJS也好，Backbone也好，都解决了一个MV的问题。简单来说就是前端的MV结构。那React有和不同呢？我们为什么还需要选择React? React并不像AngularJS ，他只集中解决了Views,而且它是单向数据流的。React 相对于AngularJS来说，并不是一个解决MV*的框架，更接近AngularJS directives. React 提供了独立的UI模块化组件，方便开发，测试，和组件重用。React有别于我们熟悉的Jquery，不直接控制DOM元素，而是通过JavaScript与DOM之间的虚拟DOM元素完成对操作。</p>
<p>TypeScript在1.6版本开始已经支持React的JSX当然你得把名字换成TSX ，这让编写React更有范儿了。说到这个也是满心的欢喜，因为微软不止爱Google,也爱Facebook. 通过TypeScript你可以写出更漂亮的React代码。</p>
<p>来个Hello World 吧！</p>
<p>先通过tsd把React所对应的TypeScript 下载下来输入tsd install react-global , 这里包含了React基础库以及如React-Dom,React-AddOn等相对应的TypeScript描述。</p>
<p><img src="/blog/2018/09/22/React-with-TypeScript-系列-一-概述/20151223235714492.png" alt><br>创建一个简单的HelloWorld.tsx（因为这是TypeScript哦），再入以下代码 ：</p>
<figure class="highlight typescript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">interface</span> HelloWorldProps &#123;</span><br><span class="line">  name: <span class="built_in">string</span>;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">class</span> HelloMessage <span class="keyword">extends</span> React.Component&lt;HelloWorldProps, <span class="built_in">any</span>&gt; &#123;</span><br><span class="line">  render() &#123;</span><br><span class="line">    <span class="keyword">return</span> &lt;div&gt;Hello &#123;<span class="keyword">this</span>.props.name&#125;&lt;<span class="regexp">/div&gt;;</span></span><br><span class="line"><span class="regexp">  &#125;</span></span><br><span class="line"><span class="regexp">&#125;</span></span><br><span class="line"><span class="regexp"></span></span><br><span class="line"><span class="regexp">ReactDOM.render(&lt;HelloMessage name="React" /</span>&gt;, <span class="built_in">document</span>.getElementById(<span class="string">'container'</span>));</span><br></pre></td></tr></table></figure>
<p>通过命令行编译HelloWorld.tsx , 在终端输入 tsc –jsx react  HelloWorld.tsx编译通过后就可以生成HelloWorld.js了。</p>
<p>添加一个index.html 页面 ，去嵌套你的HelloWorld.js </p>
<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">&lt;!DOCTYPE html&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">html</span>&gt;</span></span><br><span class="line"> <span class="tag">&lt;<span class="name">body</span>&gt;</span></span><br><span class="line"></span><br><span class="line">    <span class="tag">&lt;<span class="name">div</span> <span class="attr">id</span>=<span class="string">"container"</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;/<span class="name">div</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">script</span> <span class="attr">src</span>=<span class="string">"/js/react.js"</span>&gt;</span><span class="tag">&lt;/<span class="name">script</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">script</span> <span class="attr">src</span>=<span class="string">"/js/react-dom.js"</span>&gt;</span><span class="tag">&lt;/<span class="name">script</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">script</span> <span class="attr">src</span>=<span class="string">"/scripts/HelloWorld.js"</span>&gt;</span><span class="tag">&lt;/<span class="name">script</span>&gt;</span></span><br><span class="line"> <span class="tag">&lt;/<span class="name">body</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">html</span>&gt;</span></span><br></pre></td></tr></table></figure>
<p>直接运行index.html (这里你需要选择放在nodejs/.net/java/php等服务上)就可以看到Hello React了</p>
<p><img src="/blog/2018/09/22/React-with-TypeScript-系列-一-概述/20151224001428979.png" alt></p>
<p>它究竟做了什么？  简单来说就是创建了一个虚拟DOM  HelloMessage ，然后传递一个React的参数进去，然后放到页面contents的元素内。从语法上来说，没有多大需要学习的。你只需要理解什么是虚拟DOM就可以了。（当然今天只谈概要，更多知识我会放在后面说）。</p>
<p>有人会说，React只做View ，那么剩下的M,*(Controller/Presenter/ViewModel)如何做？其实Facebook给了你一个很好的答案Flux ，完全的单项数据流传递，方便拆分，方便测试。如图，这是一个经典的Flux解决方案，通过整合React能高效完成开发任务。在接下来几天我会一一和大家解答。</p>
<p><img src="/blog/2018/09/22/React-with-TypeScript-系列-一-概述/20151224002727841.png" alt></p>
<p>React是一个比较新的前端解决方案，现在是0.14.x的版本，有很多不太成熟的地方。不过有Facebook的后台撑腰也是非常不错的，毕竟把它用在了Facebook/Instagram的项目中。随着越来越多的开发人员加入到React中来，我相信会加快产品的迭代和进步。</p>

      
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